EP 1062379 A1 20001227 - SURFACE-TREATED ARTICLE OF MAGNESIUM OR MAGNESIUM ALLOYS, METHOD OF SURFACE PREPARATION AND METHOD OF COATING
Title (en)
SURFACE-TREATED ARTICLE OF MAGNESIUM OR MAGNESIUM ALLOYS, METHOD OF SURFACE PREPARATION AND METHOD OF COATING
Title (de)
OBERFLÄCHENBEHANDELTER ARTIKEL AUS MAGNESIUM ODER MAGNESIUMLEGIERUNGEN, VERFAHREN ZUR OBERFLÄCHENBEHANDLNG UND VERFAHREN ZUM BESCHICHTEN
Title (fr)
ARTICLE EN MAGNESIUM OU EN ALLIAGE DE MAGNESIUM TRAITE EN SURFACE, PROCEDE DE PREPARATION DE SURFACE ET PROCEDE DE REVETEMENT
Publication
Application
Priority
- JP 9901275 W 19990316
- JP 6711698 A 19980317
- JP 2495699 A 19990202
Abstract (en)
[origin: US6409844B1] An article of magnesium or its alloy having a surface layer containing magnesium condensed phosphate and magnesium phosphate, which can be produced by treating an article of magnesium or its alloy with a treating liquid containing 1,000 to 20,000 ppm of alkaline metal ions, 1,000 to 50,000 ppm of condensed phosphate ions, and 100 to 20,000 ppm of borate ions, and having pH of at least 8. The treated article has good corrosion resistance, and a coating can be formed on the surface of the article with good adhesion.
IPC 1-7
IPC 8 full level
C23C 22/07 (2006.01); C23C 22/23 (2006.01); C23C 22/57 (2006.01); C23C 22/60 (2006.01); C23F 1/40 (2006.01); C23G 1/22 (2006.01)
CPC (source: EP KR US)
C09D 5/038 (2013.01 - KR); C23C 22/60 (2013.01 - EP KR US)
Citation (search report)
See references of WO 9947729A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
US 6409844 B1 20020625; BR 9908778 A 20001114; CN 1140652 C 20040303; CN 1302341 A 20010704; DE 69902151 D1 20020822; DE 69902151 T2 20030313; EP 1062379 A1 20001227; EP 1062379 B1 20020717; JP H11323571 A 19991126; KR 100345284 B1 20020725; KR 20010041829 A 20010525; MY 119942 A 20050830; RU 2221081 C2 20040110; WO 9947729 A1 19990923
DOCDB simple family (application)
US 62321800 A 20000830; BR 9908778 A 19990316; CN 99806287 A 19990316; DE 69902151 T 19990316; EP 99907943 A 19990316; JP 2495699 A 19990202; JP 9901275 W 19990316; KR 20007010114 A 20000914; MY PI9900978 A 19990316; RU 2000126290 A 19990316